Barrier structure



FIG. 1 is a perspective view of a barrier structure according to my new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left side elevational view thereof, the other side being a mirror image; and,

FIG. 5 is a top plan view thereof. 

CLAIM The ornamental design for a barrier structure, as shown and described. 